SugarTrack: A Free, Offline Blood Sugar Logbook That Keeps Your Data on Your Phone

SugarTrack – an offline Android logbook for blood sugar (no account, no cloud)

SugarTrack is a free, open-source Android app for logging blood sugar readings. It works entirely offline, with no account, no cloud, and no servers—all data stays on the device. Users can log readings with context (fasting, before/after meals, bedtime, random), add notes and photos, track trends, log medications and A1C results, set reminders, and export reports (PDF/CSV) for doctor visits. The app supports mg/dL and mmol/L units and customizable target ranges. It was built by a developer who wanted an alternative to paper logbooks for a family member.